Cycling is an amazing way of exploring a city !!
Delhi has an organised cycle tour on bicycle , which is an amazing initiative just recently started in Decemeber 2009. I somehow find the fee for the tour a bit too much.
Creating a set up for guided tour of the old walled city of Ahmedabad has also been one of our design opportunities for the cycle systems project. In this regard, I had a meeting with Mr. Debashish Nayak , the founder of the Cruta Foundation to first start Heriatge walk in Calcutta and then in Ahmedabad in 1997. When I proposed a Heritage ride of Ahmedabad he was excited to know about this and agreed on lending all the possible help for making this project a reality.